Influence of injection angle on oil splash of herringbone gear

Abstract

Oil injection lubrication is a common lubrication method for aviation gear transmission. Due to the high-speed rotation of the gear, a part of the lubricating oil splashes off the gear surface after colliding with the gear surface. The amount of oil splashing under the oil injection condition affects the cooling effect of gear lubrication. In this paper, according to the characteristics of aviation herringbone gear injection lubrication, an oil splash calculation model of aviation herringbone gear injection lubrication is established by using advanced computational fluid dynamics theory and method, and the influence of different injection angles on oil splash is analyzed, which can provide theoretical guidance for the design of injection lubrication parameters.